CVE-2026-31764

System crash via out-of-bounds sensor index

Published May 1, 2026 · Updated May 1, 2026

Out-of-bounds access in the st_lsm6dsx IIO driver in Linux Kernel 6.19 allows local users to crash the system via a sysfs write. st_lsm6dsx_hwfifo_odr_store() passes unsupported sensor IDs to st_lsm6dsx_check_odr(), which indexes the two-entry odr_table with sensor->id. The path requires low-privileged local access and an affected st_lsm6dsx sensor attribute; the bounded reported consequence is a kernel crash.

CVSS severity7.8
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the st_lsm6dsx IIO driver in Linux Kernel 6.19 allows local users to crash the system via a sysfs write. st_lsm6dsx_hwfifo_odr_store() passes unsupported sensor IDs to st_lsm6dsx_check_odr(), which indexes the two-entry odr_table with sensor->id. The path requires low-privileged local access and an affected st_lsm6dsx sensor attribute; the bounded reported consequence is a kernel crash.

The record

CVE
CVE-2026-31764
Published
May 1, 2026
Updated
May 1, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2026CVE publishedPublication date reported by the CVE source.
  2. May 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.19
  2. Affected versionversion=6b648a36c200dfd3e776e657a4c8a8ce63fb52d3 <3225a81e8d264442b14c7c1bc965ebafa3c0ee01
  3. Affected versionversion=6b648a36c200dfd3e776e657a4c8a8ce63fb52d3 <679c04c10d65d32a3f269e696b22912ff0a001b9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.19; version=6b648a36c200dfd3e776e657a4c8a8ce63fb52d3 <3225a81e8d264442b14c7c1bc965ebafa3c0ee01; version=6b648a36c200dfd3e776e657a4c8a8ce63fb52d3 <679c04c10d65d32a3f269e696b22912ff0a001b9

Published CVSS scores

5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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